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Android實(shí)現(xiàn)簡(jiǎn)單下拉篩選框

 更新時(shí)間：2018年10月26日 11:37:58   作者：smallredzi  
這篇文章主要為大家詳細(xì)介紹了一款簡(jiǎn)單靈活的Android下拉篩選框，具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下

最近接到一個(gè)新的項(xiàng)目，項(xiàng)目時(shí)間比較緊張，有一個(gè)功能類(lèi)似于58同城,京東的一個(gè)下拉篩選框，為了節(jié)省時(shí)間，從網(wǎng)上面拷貝了一份封裝好的代碼，進(jìn)行的自己的一些修改，感覺(jué)靈活性還挺高的，分享出來(lái)給大家看一看

大致效果如下，可以自己加入自己的布局

先看一下這個(gè)ExpandTabView這個(gè)類(lèi)  代碼比較簡(jiǎn)單 我就不做具體介紹了 有不懂的可以私信我

public class ExpandTabView extends LinearLayout implements OnDismissListener {
 
 private ToggleButton selectedButton;
 private ArrayList<String> mTextArray = new ArrayList<String>();
 private ArrayList<RelativeLayout> mViewArray = new ArrayList<RelativeLayout>();
 private ArrayList<ToggleButton> mToggleButton = new ArrayList<ToggleButton>();
 private Context mContext;
 private final int SMALL = 0;
 private int displayWidth;
 private int displayHeight;
 private PopupWindow popupWindow;
 private int selectPosition;
 
 public ExpandTabView(Context context) {
 super(context);
 init(context);
 }
 
 public ExpandTabView(Context context, AttributeSet attrs) {
 super(context, attrs);
 init(context);
 }
 
 /**
 * 根據(jù)選擇的位置設(shè)置tabitem顯示的值
 */
 public void setTitle(String valueText, int position) {
 if (position < mToggleButton.size()) {
 mToggleButton.get(position).setText(valueText);
 }
 }
 
 public void setTitle(String title){
 
 }
 /**
 * 根據(jù)選擇的位置獲取tabitem顯示的值
 */
 public String getTitle(int position) {
 if (position < mToggleButton.size() && mToggleButton.get(position).getText() != null) {
 return mToggleButton.get(position).getText().toString();
 }
 return "";
 }
 
 /**
 * 設(shè)置tabitem的個(gè)數(shù)和初始值
 */
 public void setValue(ArrayList<String> textArray, ArrayList<View> viewArray) {
 if (mContext == null) {
 return;
 }
 LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
 
 mTextArray = textArray;
 for (int i = 0; i < viewArray.size(); i++) {
 final RelativeLayout r = new RelativeLayout(mContext);
 int maxHeight = (int) (displayHeight * 0.7);
 RelativeLayout.LayoutParams rl = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT, maxHeight);
 rl.leftMargin = 10;
 rl.rightMargin = 10;
 r.addView(viewArray.get(i), rl);
 mViewArray.add(r);
 r.setTag(SMALL);
 ToggleButton tButton = (ToggleButton) inflater.inflate(R.layout.toggle_button, this, false);
 addView(tButton);
 View line = new TextView(mContext);
 line.setBackgroundResource(R.drawable.choosebar_line);
 if (i < viewArray.size() - 1) {
 LayoutParams lp = new LayoutParams(2, LayoutParams.FILL_PARENT);
 addView(line, lp);
 }
 mToggleButton.add(tButton);
 tButton.setTag(i);
 tButton.setText(mTextArray.get(i));
 
 r.setOnClickListener(new OnClickListener() {
 @Override
 public void onClick(View v) {
  onPressBack();
 }
 });
 
 r.setBackgroundColor(mContext.getResources().getColor(R.color.popup_main_background));
 tButton.setOnClickListener(new OnClickListener() {
 @Override
 public void onClick(View view) {
  // initPopupWindow();
  ToggleButton tButton = (ToggleButton) view;
 
  if (selectedButton != null && selectedButton != tButton) {
  selectedButton.setChecked(false);
  }
  selectedButton = tButton;
  selectPosition = (Integer) selectedButton.getTag();
  startAnimation();
  if (mOnButtonClickListener != null && tButton.isChecked()) {
  mOnButtonClickListener.onClick(selectPosition);
  }
 }
 });
 }
 }
 
 private void startAnimation() {
 
 if (popupWindow == null) {
 popupWindow = new PopupWindow(mViewArray.get(selectPosition), displayWidth, displayHeight);
 popupWindow.setAnimationStyle(R.style.PopupWindowAnimation);
 
 popupWindow.setFocusable(false);
 popupWindow.setOutsideTouchable(true);
 }
 
 if (selectedButton.isChecked()) {
 if (!popupWindow.isShowing()) {
 showPopup(selectPosition);
 } else {
 popupWindow.setOnDismissListener(this);
 popupWindow.dismiss();
 hideView();
 }
 } else {
 if (popupWindow.isShowing()) {
 popupWindow.dismiss();
 hideView();
 }
 }
 }
 
 private void showPopup(int position) {
 View tView = mViewArray.get(selectPosition).getChildAt(0);
 if (tView instanceof ViewBaseAction) {
 ViewBaseAction f = (ViewBaseAction) tView;
 f.show();
 }
 if (popupWindow.getContentView() != mViewArray.get(position)) {
 popupWindow.setContentView(mViewArray.get(position));
 }
 popupWindow.showAsDropDown(this, 0, 0);
 }
 
 /**
 * 如果菜單成展開(kāi)狀態(tài)，則讓菜單收回去
 */
 public boolean onPressBack() {
 if (popupWindow != null && popupWindow.isShowing()) {
 popupWindow.dismiss();
 hideView();
 if (selectedButton != null) {
 selectedButton.setChecked(false);
 }
 return true;
 } else {
 return false;
 }
 
 }
 
 private void hideView() {
 View tView = mViewArray.get(selectPosition).getChildAt(0);
 if (tView instanceof ViewBaseAction) {
 ViewBaseAction f = (ViewBaseAction) tView;
 f.hide();
 }
 }
 
 private void init(Context context) {
 mContext = context;
 displayWidth = ((Activity) mContext).getWindowManager().getDefaultDisplay().getWidth();
 displayHeight = ((Activity) mContext).getWindowManager().getDefaultDisplay().getHeight();
 setOrientation(LinearLayout.HORIZONTAL);
 }
 
 @Override
 public void onDismiss() {
 showPopup(selectPosition);
 popupWindow.setOnDismissListener(null);
 }
 
 private OnButtonClickListener mOnButtonClickListener;
 
 /**
 * 設(shè)置tabitem的點(diǎn)擊監(jiān)聽(tīng)事件
 */
 public void setOnButtonClickListener(OnButtonClickListener l) {
 mOnButtonClickListener = l;
 }
 
 /**
 * 自定義tabitem點(diǎn)擊回調(diào)接口
 */
 public interface OnButtonClickListener {
 public void onClick(int selectPosition);
 }
 
}

這個(gè)代碼基本就是對(duì)popupwindow進(jìn)行了封裝，通過(guò)對(duì)ToggleButton按鈕的監(jiān)聽(tīng)來(lái)實(shí)現(xiàn)popupwindow的彈出和收回。

外部設(shè)置的話，也特別簡(jiǎn)單，只需要將自己定義好的布局傳入到list集合中就可以。

下面是MainActivity中的代碼

public class MainActivity extends AppCompatActivity {
 
 
 private ExpandTabView expandTabView;
 private ArrayList<View> mViewArray = new ArrayList<View>();
 private ViewLeft viewLeft;
 private ViewMiddle viewMiddle;
 private ViewRight viewRight;
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  initView();
  initVaule();
  initListener();
 
 }
 
 private void initView() {
 
  expandTabView = (ExpandTabView) findViewById(R.id.expandtab_view);
  viewLeft = new ViewLeft(this);
  viewMiddle = new ViewMiddle(this);
  viewRight = new ViewRight(this);
 
 }
 
 private void initVaule() {
  mViewArray.add(viewMiddle);
 mViewArray.add(viewLeft);
 mViewArray.add(viewRight);
  ArrayList<String> mTextArray = new ArrayList<String>();
  mTextArray.add("區(qū)域");
 mTextArray.add("距離");
 mTextArray.add("距離");
 
  expandTabView.setValue(mTextArray, mViewArray);
// expandTabView.setTitle(viewLeft.getShowText(), 0);
// expandTabView.setTitle(viewMiddle.getShowText(), 1);
// expandTabView.setTitle(viewRight.getShowText(), 2);
 
 }
 
 private void initListener() {
 
  viewLeft.setOnSelectListener(new ViewLeft.OnSelectListener() {
 
   @Override
   public void getValue(String distance, String showText) {
    onRefresh(viewLeft, showText);
   }
  });
 
  viewMiddle.setOnSelectListener(new ViewMiddle.OnSelectListener() {
 
   @Override
   public void getValue(String showText) {
 
    onRefresh(viewMiddle,showText);
 
   }
  });
 
  viewRight.setOnSelectListener(new ViewRight.OnSelectListener() {
 
   @Override
   public void getValue(String distance, String showText) {
    onRefresh(viewRight, showText);
   }
  });
 
 }
 
 private void onRefresh(View view, String showText) {
 
  expandTabView.onPressBack();
  int position = getPositon(view);
  if (position >= 0 && !expandTabView.getTitle(position).equals(showText)) {
   expandTabView.setTitle(showText, position);
  }
//  Toast.makeText(MainActivity.this, showText, Toast.LENGTH_SHORT).show();
 
 }
 
 private int getPositon(View tView) {
  for (int i = 0; i < mViewArray.size(); i++) {
   if (mViewArray.get(i) == tView) {
    return i;
   }
  }
  return -1;
 }
 
 @Override
 public void onBackPressed() {
 
  if (!expandTabView.onPressBack()) {
   finish();
  }
 
 }
 
}

以上就是這個(gè)篩選菜單欄的大致用法，個(gè)人感覺(jué)還是比較簡(jiǎn)單的，也比較靈活,修改起來(lái)也比較方便。

但是在項(xiàng)目中使用的時(shí)候碰到了一個(gè)問(wèn)題，就是popupwindow在7.0的手機(jī)上彈出位置異常的問(wèn)題,，查了一下，是因?yàn)槭謾C(jī)狀態(tài)欄高度的問(wèn)題

于是重寫(xiě)了一下popupwindow的showAsDropDown方法就解決了，下面是具體代碼

@Override
 public void showAsDropDown(View anchor, int xoff, int yoff) {
  if(Build.VERSION.SDK_INT >= 24) {
   Rect rect = new Rect();
   anchor.getGlobalVisibleRect(rect);
   int h = anchor.getResources().getDisplayMetrics().heightPixels - rect.bottom;
   setHeight(h);
  }
  super.showAsDropDown(anchor, xoff, yoff);
 }

通過(guò)對(duì)SDK版本來(lái)進(jìn)行判斷，大于24的話就執(zhí)行這個(gè)方法，解決了popupwindow在7.0手機(jī)上異常彈出的問(wèn)題。

最后附上Demo地址 

以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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